Some of those people actually think that the third world, uncivilised aspect of it all is liberating. That's what confuses me. Are they not grateful for the freedoms that they already have?

This seems to anger/irritate you somewhat and I do not understand why?

If there are those travellers who want to see that aspect, and even live in that kind of a life, albeit non permanently for a while, why does that annoy you so much?